Local newcomers Mona Medusa celebrate the release of their debut CD, 'Shiver,' Friday with a free show at the Northside Tavern that includes performances by local Rock bands The Host, Caterpillar Tracks and The Prohibitionists. For their set, Mona Medusa promise a theatrical production in the form of a short play intended to reflect the new CD (not sure what that means, but I was sent a Lone Ranger mask to wear to the show).